|script |programming the calculator|
|start program                      |
|addStep|+                         |
|addStep|*                         |
|addStep|-                         |
|save   |ams                       |
|enter  |3                         |
|enter  |5                         |
|enter  |2                         |
|enter  |13                        |
|perform|ams                       |
|ensure |xIs          |-72         |
